Water hemlock is considered the deadliest plant in North America, and these poison parsnips have caused at least two ...

Parsnip-flower buckwheat does best in sandy or rocky soil. Sow the seeds right into the ground early in the spring, leaving roughly 9-18 inches of space so the plants can spread. Water the ...

Like many other biennial invasives, wild parsnip is able to produce a large seed bank that can remain viable for years. As a result, the plant can easily spread and form dense stands in high quality ...

Wild parsnip, on the other hand, is identifiable by its bright yellow flowers arranged in umbels, a green hollow stem with deep grooves and lower leaves that resemble those of a celery plant.